On Tue, Feb 23, 2021 at 07:44:27PM -0800, Bhaumik Bhatt wrote: > v3: > -Removed config changes that crept in in the first patch > > v2: > -Addressed review comments > -Introduce new patch for to use controller defined read_reg() for polling > -Add usage in RDDM download panic path as well > > Use polling instead of interrupt driven approach to wait for MHI ready state. > > In certain devices, it is likely that there is no incoming MHI > interrupt for a transition to MHI READY state. One such example > is the move from Pass Through to an SBL or AMSS execution > environment. In order to facilitate faster bootup times as there > is no need to wait until timeout_ms completes, MHI host can poll > every 25 milliseconds to check if device has entered MHI READY > until a maximum timeout of twice the timeout_ms is reached. > > This patch series has been tested on an arm64 device. > So this is a spinoff from "Execution environment updates from MHI"? Please mention it in the cover letter and which one is the latest. Thanks, Mani > Bhaumik Bhatt (3): > bus: mhi: core: Introduce internal register poll helper function > bus: mhi: core: Move to polling method to wait for MHI ready > bus: mhi: core: Use poll register read API for RDDM download > > drivers/bus/mhi/core/boot.c | 20 ++++++-------------- > drivers/bus/mhi/core/internal.h | 3 +++ > drivers/bus/mhi/core/main.c | 23 +++++++++++++++++++++++ > drivers/bus/mhi/core/pm.c | 31 ++++++++++++++----------------- > 4 files changed, 46 insertions(+), 31 deletions(-) > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
